The state Department of Water Resources is required to produce 100-year and 200-year flood maps for the Central Valley by July 2008. (A 100-year flood event by definition means only a one percent chance in any given year for a big flood; the odds on a 200-year flood occurring is only .5 percent in any given year.)

The new maps should affect land-use planning decisions immediately. Cities and counties won?EUR??,,????'???t be approving development on land lacking 100-year flood protection. After 2015, a land development targeted for 10,000 people or more will not be built without 200-year flood protection or ?EUR??,,????'??making adequate progress toward that standard.?EUR??,,????'??

Some legislators did not think the bill was restrictive enough leading up to 2015 and believe new homes and businesses may end up in harm’s way.